Out of Autoclave
Some Design Issues
A variety of resins can be used for offshore applications, depending on the requirements for the final product. General-purpose polyester offers a low-cost option that provides greater corrosion resistance than steel. Isophthalic polyester provides somewhat better corrosion resistance, while vinyl ester is pre
Read MoreFiber Reinforcement Types
Because small-diameter filaments are extremely fragile, they are supplied in bundles. The terminology for identifying these bundles varies, based on the type of fiber. Glass and aramid fiber bundles are called strands, rovings or yarns. In current usage, a “strand” is a collection of continuous filaments and a
Read MoreSubsea Wellhead And Pipeline Protection Covers
Wellhead and pipeline protection covers are required under the Norsok regulations for subsea installations in the Norwegian sector (Standard U-002, Subsea Structures and Piping System). Traditional steel wellhead covers are very large — often more than 50 ft/15m square — to allow ROVs access to the Christmas t
Read MoreComposite Trusses For Large Structures?
Ebert Composites Corp. (Chula Vista, Calif., U.S.A.) is marketing a composite truss concept for large structures that has potential for offshore application. Since 1992, the company has focused on the development of large, all-composite lattice-type power transmission towers to replace galvanized steel towers.
Read MoreLooking Forward
Current composite tether designs are leveraged to take advantage of existing oil-field manufacturing facilities. The wirerope stranding facilities, umbilical closing machines, steel anchors and installation methods used today for steel and synthetic cables can immediately accommodate rope-style composite tethe
Read MoreDownhole Composites Boost Durability, Drillability
Halliburton Energy Services, Schlumberger Oilfield Services, Weatherford International, and Baker Oil Tools, all based in Houston, Texas (U.S.A.), offer composite downhole tools — made with both thermoplastics and thermoset resins — for a variety of applications. Halliburton’s FasDrill packers and plugs
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